[adrianwaj]

There is a site that started in Australia that allows people to trade services for equity. Check it out: http://www.webequity.com.au. Note, just over a week ago they launched an international version.

Also, you could setup a pledge system, whereby money is called upon from pledgers only once a certain amount has been pledged. http://www.sellaband.com does this to help musicians do albums. Here, you could have say a few high profile angels or personalities to whom you've pitched make an initial pledge and then others might follow. The amount isn't that important, it's their profile/reputation. The site that could help is http://www.pledgebank.com.

Also see:

http://www.fundable.com http://micropledge.com http://www.chipin.com and maybe even http://TipJoy.com.

The good thing about doing purpose built fundraising site for startups is that a lot of the marketing work would be already done for startups that want to use it. In other words, the startups gathered in one spot would attract the investors.